Table 3 HR (95%CI) of breast cancer-specific death associated with BMI overall and by menopausal status

All

<21.2

163

963.0

34

1.69

0.98 - 2.92

1.59

0.90 - 2.81

≥21.2 to <23.3

166

1052.4

21

1.00 (reference)

1.00 (reference) ^a

≥23.3 to <25.8

161

1020.1

26

1.32

0.74 - 2.35

1.20

0.66 - 2.17

≥25.8

163

997.3

27

1.40

0.79 - 2.49

1.46

0.81 - 2.64

p for trend

0.64

0.87

p for trend in women with BMI ≥21.2

0.20

0.18

Premenopausal

<21.2

89

556.1

15

1.60

0.68 - 3.80

1.22

0.47 - 3.14

≥21.2 to <23.3

73

510.2

8

1.00 (reference)

1.00 (reference) ^b

≥23.3 to <25.8

63

391.6

11

1.77

0.71 - 4.41

1.62

0.63 - 4.20

≥25.8

52

319.8

10

1.95

0.77 - 4.96

1.68

0.61 - 4.65

p for trend

0.48

0.34

p for trend in women with BMI ≥21.2

0.18

0.51

Postmenopausal

<21.2

67

371.6

15

1.89

0.87 - 4.11

1.22

0.52 - 2.86

≥21.2 to <23.3

86

500.7

11

1.00 (reference)

1.00 (reference) ^b

≥23.3 to <25.8

93

589.2

13

1.09

0.49 - 2.45

0.79

0.32 - 1.93

≥25.8

108

670.7

14

1.02

0.46 - 2.26

1.03

0.43 - 2.50

p for trend

0.15

0.56

p for trend in women with BMI ≥21.2

0.86

0.45

Pre v Post p for heterogeneity of trends

0.13

0.27

Pre v Post p for heterogeneity of trends in women with BMI ≥21.2

0.29

0.80